Water-gage.



G. L. HUNTRESS, ln.

WATEHGAGE.

APPLICATION-FILED APR.7.19 10.

Patented May 2, 1916.

G. l.. HUNTRESS, Jin. WATER GAGE.

APPLICATION FILED APRf?, I9I0 Patete May 2, 1916.

/3 /1 A J6 I 7 Y I 36' I I 9 37( sa I "l lllififllhl@ GEORGE Ifo. RUIMTE-E55, JR., OF WINCHESTER, MSSACHUSLETTS.

.application filed apri?. i?, 1910.

To all whom t may concern.'

Be it known that l, Grenen L. ii'ori'rnnss, Jr., a citizen of the United States, and a resident of 'Winchesten in the county oi Middlesex, State of Massachusetts, have invented an Improvement in lNater-Gages, oi which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to water gagcsand the like and, among other` objects, aims to provide improved means for securing the gage glass in position without danger of breaking said glass.

The character of the invention may be best understood by reference to the follow ing description of an illustrative einhodiment thereof shown in the accompanying drawings, wherein;

Figure l is a front elevation of a water gage embodying my'invention; Fig. 2 is a, side view of lFig. l, partly in section and artly in elevation; Fig. 3 is a rear view of Jig. l; lig. i is a section taken on line bei of Fig. ylig. 5 is a rear elevation of a modification; Fig'. 6 is a side elevation of Fig. 5, partly in section; and Fig. 'l' is a section taken on line 7-7 of Fig. il..v i

ln high. pressure water gages it is necessary to employ a glass tor disclosing the lWater level which will be sufliciently strong to withstand the pressure and at the saine time should clearly indicate the height ot the water in the gage. Herein a redox glass is used, known as the Klinger type. This glass has the form of a comparatively thick block provided on its inner surface with grooved faucets' at such angles as to eliminate all lignt from thevacant space bach of the glass and at the same time permit the passage of light through that por ion of the grooves covered with water or other liquid.

Heretofore considerable diliicultyhas been found in securing the glass in the gage without cracking. @ne oi' the objects of my invention is to provide a water gage in which the glass will be .llcld in place with a uniform pressure without danger of cracking. i

The illustrative water gage shown herein as embodying 'my invention comprises a Water container or tube 1 (Fig. 1) adapted Specification of Letters Patent.

llmatented May 2, lliilti..

Serial No. 553,923.

to be connected to pipes 2 leading from the 'upper and lower parts ci a boiler or other water receiverb A face ci the tube l is provided 'with upper and lower lateral apertures 3 (Fig. 2). Each of these apertures may be closed by a Klinger retlexgor other glass 7, a suitable gasket strip 9 being pro vided for such glass.

l.- will now describe provision. for securelv seating these glasses on the apertured acue of said tube with a uniform pressure. The devices for retaining the upper and lower glass may be the saine and hence a description of one will suliice for both. Such a device comprises a traine or housing li hav# ing a portion shaped to receive the glass block 7 and having an aperture i3 for exposing the glass 'and permitting the level of the water in the tube l to be seen. The outer 'face of the glass may rest against a gasket 17' in the frame il to prevent injury to said glass. The trame 1l. has open ends to permit the introduction or the tube ll therein.

To draw the glass block T irrnly over the lateral apertures 3 in the tube 1 with an even pressure suiicient to prevent leakage therebetween and eiectuaily withstand. the

high pressure within the tube, there is pro-- vided wedge means, herein in the form of opposed ywedges 19 having flat laces resting against the fiat back oi? the tube land having inclined faces cooperating with similarly inclined faces of the back 2O of the frame l1. These wedges 19 may be thrust toward one another to press the glass block 7 tightly .over the aperture 3 by an adjusting screw 23 having its ends oppon sitely threaded into apertures inears 25 on said wedges l), said ears projecting out from. said 'frame through recesses-26 therein.. To prevent longitudinal movement of said screw on said frame, said screw is provided with a central liange Q7 accurately fitting in an. arc-like recess 29 in the external tace of said frame 1l. An end et' said screw may be squared to facilitate its adjustment.

The rotation of the screw 23 will draw the wedges 19 equally toward one another and will press against the back of the tube 1 with an even pressure and as a result the glass l in turn will be drawn onto the apertured face of said tube with an even pressure. Since the pressure on the glass is l In a' similar 'manner the upper glass mayv be' uniform 'there will be-no ldanger of-setting up strains therein which might result in its cracking or mutilation.

. in assembling the parts iirst the glass block is placed in the frame 11 on 'the gasket 17. r1`hen an end of the tube 1 is introduced within the frame with its aperture properly positioned over said glass. The adjusting screw 23 is then turned to draw said parts iirmly together as described.

positioned and secured overthe upper aperture in the tube l.

it willbe observed that by this construction the unequal pressure liable to occur where a number of diiierent adjustments are used to press the parts together is eliminated, since the parts herein are drawn securely together by one adjustment through the turning of one instrumentality.

Referring to Figs. 5, 6 and 7 l will new describe another modification of wedge means for securing the parts together. The

tube, glass and frame may be substantially the same as those previously described. The

parts are retained together by a wedge clamping member 33 having a iiat face 35 resting against the back of the tube 1 and oppositely inclined sides 36, said member lbeing prevented from dropping out of place by screws 37 threaded into said member and loosely entered through said frame. To

initially position the member 33 on the back of said tube there may be provided a screw 39 threaded'into said frame and having a rounded end for engagement with a similarly shaped depression in said member. After said member has been initially positioned against the back of the tube it may be. rmly set against the latter by sliding wedges 41 having'flat sides resting against the inner surface of said frame 'and inclined sides for engagement with the inclined sides 36. of the member 33 referred to.A These wedges 41 ma other by screws 43' threaded into bosses l45 on said frame andA having heads 47 occupying T-shaped recesses in the outer ends oi said wedges 41. Said screws may have squared ends 49 whereby they'inay be turned to slide the wedges 41 toward one another.

' In assembling the parts, after the glass 'i block is set in place in the frame; the end of the tube is introduced therein.

The clamping member 33 is then initially positioned against. the back of the tube by setting' up the screw 39. `The rounded end of the latter coperates' with the similarly shaped depression in said member and permits the latter to adjust itself evenly on the back of said tube. The adjusting screws 43 are then turned to force the wedges toward.

one another and draw the glass block securely onto its seat with a tight fit.

In each of the modifications it will be 0bbe slid in toward lone an-l fluid container; a glass for disclosin served that the gage comprises an upper and a lower glass. 1t will be observed that these glasses are spaced apart and are each provided with separate securing means for re'- taining them in place.

if steam andA water were in the tube opposite the same glass the upper portion of the latter and of said frame would be hotter than the lower portion of the lglass and frame. This diiierence in temperature would expand the upper portion of the frame more than the lower portion. The unequal pressure thus caused on the glass would be liable to crack tlie-latter. By my invention the glass disclosing the steam'is separated from the glass disclosing the normalI water level. As a result the temperature on each glass is substantially uniform and the dan ger of cracking the glass from unequal strains thereon due todiii'erences in tempera` ture is eliminated and the life of the glass is prolonged. It will, therefore, be observed that the whole arrangement and construc- .tion of the device contribute to the maintenance of the glass on its seat with a vuniform pressure throughout. The wedge means con struction in its broader aspect is claimed in Letters Patent No. 1,059,733, granted to me` means to secure said transparent means to said container including wedges and means for moving said wedges toward one another to vary their wedging action.

l2. A gage comprising, in combination, a fluid container having an aperture therein;

transparent means for covering said aperture; a frame for said parts; wedges cooperating Y.with said frame and container; and means to operate said wedges toward one another to secure said transparent means to said container. l

3. A gage comprising, in combination, a. fluid container having an aperture therein; transparent means for covering said aperture; a frame for said parts; wedges cooperating -with said frame and container; and a screw for drawing said wedges toward one another to` secure said transparent means to said container.

4. A gage comprising, in combination, a the level of a liquid in said container a trame receiving said glass and container; wedges interposed between the latter and said frame and tapering toward one another; and means to cause said wedges to approach one another to secure said glass to said container. l

5. A water gage comprising, in combination, a water tube having a lateral aperture therein; a glass tnere'or; a frame carrying In testimony whereof, have signed my the latter; Wedges coperatingl .with said name to thls specification, in the presence of frame and tubeya screw for settmg up said .two subscribn witnesses.

Wedges to seat said 'glass t0 cover said aper- GE RGE L. HUNTRESS, JR. 5 ture and means coperating with said frame Witnesses: v

fop preventing longtlidmal movement'I of .HENRY T. WILLIAMS,

, sw screw. ROBERT H. KAMMLER. 

